I can up you can up she can up we can up you can up they can up
V-ing form
I can be upping you can be upping she can be upping we can be upping you can be upping they can be upping
Perfect
I can have upped you can have upped she can have upped we can have upped you can have upped they can have upped
V-ing perfect
I can have been upping you can have been upping she can have been upping we can have been upping you can have been upping they can have been upping
Negation
Simple form
I cannot up you cannot up she cannot up we cannot up you cannot up they cannot up
V-ing form
I cannot be upping you cannot be upping she cannot be upping we cannot be upping you cannot be upping they cannot be upping
Perfect
I cannot have upped you cannot have upped she cannot have upped we cannot have upped you cannot have upped they cannot have upped
V-ing perfect
I cannot have been upping you cannot have been upping she cannot have been upping we cannot have been upping you cannot have been upping they cannot have been upping
Interrogative form
Simple form
can I up? can you up? can she up? can we up? can you up? can they up?
V-ing form
can I be upping? can you be upping? can she be upping? can we be upping? can you be upping? can they be upping?
Perfect
can I have upped? can you have upped? can she have upped? can we have upped? can you have upped? can they have upped?
V-ing perfect
can I have been upping? can you have been upping? can she have been upping? can we have been upping? can you have been upping? can they have been upping?
Interro-negative form
Simple form
can I not up? can you not up? can she not up? can we not up? can you not up? can they not up?
V-ing form
can I not be upping? can you not be upping? can she not be upping? can we not be upping? can you not be upping? can they not be upping?
Perfect
can I not have upped? can you not have upped? can she not have upped? can we not have upped? can you not have upped? can they not have upped?
V-ing perfect
can I not have been upping? can you not have been upping? can she not have been upping? can we not have been upping? can you not have been upping? can they not have been upping?